2-(3-fluorophenyl)pyridine | 58861-54-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 2-(3-fluorophenyl)pyridine
• CAS: 58861-54-4
• 化学式: C₁₁H₈FN
• mdl: MFCD06201381
• 分子量: 173.19
• InChiKey: MFVNFXJHJBHQIS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  12.9
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2933399090

反应信息

• 作为反应物：
  描述：

  2-(3-fluorophenyl)pyridine 在 氧气 、 copper dichloride 作用下， 以 1,2-二氯乙烷 为溶剂， 130.0 ℃ 、101.32 kPa 条件下， 反应 24.0h， 以91%的产率得到2-(2,6-dichloro-3-fluorophenyl)pyridine
  参考文献：
  名称：

  Cu(II)-Catalyzed Functionalizations of Aryl C−H Bonds Using O₂ as an Oxidant

  摘要：

  Cu(II)-catalyzed acetoxylation and halogenation of aryl C-H bonds are developed. ortho-Selectivity was observed with a wide range of 2-arylpyridine substrates. Both mono- and difunctionalizations are achieved by tuning the reaction conditions. Excellent functional group tolerance and use of O2 as a stoichiometric oxidant are significant advantages over our recently developed Pd-catalyzed C-H functionalization reactions. These newly discovered reaction conditions are also applicable for cyanation, amination, etherification, and thioetherification of aryl C-H bonds. Mechanistic investigations are carried out to gain insights into the Cu(II)-catalyzed C-H functionalization reactions.

  DOI：

  10.1021/ja061715q
• 作为产物：
  描述：

  2-(5-fluoro-2-methoxyphenyl)pyridine 在 chromium dichloride 、 cesium fluoride 、 4,4'-二叔丁基-2,2'-二吡啶 作用下， 以 四氢呋喃 为溶剂， 反应 12.0h， 以89%的产率得到2-(3-fluorophenyl)pyridine
  参考文献：
  名称：

  未活化的芳香族和苄基 C-O 键的铬催化还原裂解

  摘要：

  据报道，铬催化还原性裂解芳香族和苄基 C-O 键。这种脱氧反应由低成本的 CrCl2 预催化剂与作为温和还原剂的聚（甲基氢硅氧烷）结合促进，提供了一种通过裂解未活化的 C-O 键形成还原基序的策略。一系列的官能团如溴、氯、氟、羟基、氨基和烷氧基羰基可以保留在还原过程中。

  DOI：

  10.1055/a-1507-6419

文献信息

• Regioselectivity in Palladium-Catalyzed C−H Activation/Oxygenation Reactions
  作者：Dipannita Kalyani、Melanie S. Sanford

  DOI：10.1021/ol051486x

  日期：2005.9.1

  [reaction: see text] Palladium-catalyzed directed C-H activation/oxygenation reactions have been explored in a series of meta-substituted aryl pyridine and aryl amide derivatives. These transformations tolerate a diverse array of electron-donating and electron-withdrawing meta-substituents and generally proceed with high levels of regioselectivity for functionalization of the less sterically hindered

  [反应：见正文]已经在一系列间位取代的芳基吡啶和芳基酰胺衍生物中探索了钯催化的CH活化/氧化反应。这些转化可耐受各种各样的供电子和吸电子的间位取代基，并且通常以较高水平的区域选择性进行，以使空间位阻较小的邻-CH键官能化。
• Copper-Mediated Chelation-Assisted <i>Ortho</i> Nitration of (Hetero)arenes
  作者：Lin Zhang、Zhenhua Liu、Huiqin Li、Guichun Fang、Badru-Deen Barry、Tuemay Abadi Belay、Xihe Bi、Qun Liu

  DOI：10.1021/ol2028288

  日期：2011.12.16

  A novel copper-mediated chelation-assisted ortho C–H nitration of (hetero)arenes has been developed for the first time, which used dioxygen as terminal oxidant and 1,2,3-TCP as solvent, leading to the synthesis of nitroaromatics with excellent regioselectivity and in good yields. Mechanistic investigations indicate a mechanism involving a four-centered transition state, with simultaneous cleavage of

  首次开发了一种新型的铜介导的（杂）芳烃螯合辅助邻硝基甲烷硝化反应，该反应使用双氧作为末端氧化剂，并使用1,2,3-TCP作为溶剂，导致硝基芳烃的合成极好的区域选择性和高收率。机理研究表明，该机理涉及一个四中心过渡态，同时裂解了2-芳基吡啶配位的铜（II）络合物上的硝酸根阴离子的邻位CH键和N-O键。
• PdCl₂and<i>N</i>-Hydroxyphthalimide Co-catalyzed C sp 2H Hydroxylation by Dioxygen Activation
  作者：Yuepeng Yan、Peng Feng、Qing-Zhong Zheng、Yu-Feng Liang、Jing-Fen Lu、Yuxin Cui、Ning Jiao

  DOI：10.1002/anie.201300957

  日期：2013.5.27

  Rad transition: The combination of transition‐metal‐catalyzed CH activation and a NHPI‐initiated radical process is essential for the title transformation. The neutral conditions and the ideal oxidant, molecular oxygen, make this hydroxylation environmentally friendly and practical. NHPI=N‐hydroxyphthalimide.

  Rad过渡：过渡金属催化的CH活化和NHPI引发的自由基过程的结合对于标题转化至关重要。中性条件和理想的氧化剂分子氧使这种羟基化技术对环境友好且实用。NHPI = N-羟基邻苯二甲酰亚胺。
• Aerobic Direct C(sp2)-H Hydroxylation of 2-Arylpyridines by Palladium Catalysis Induced with Aldehyde Auto-Oxidation
  作者：Prasenjit Das、Debajyoti Saha、Dibyajyoti Saha、Joyram Guin

  DOI：10.1021/acscatal.6b01539

  日期：2016.9.2

  Herein we present a Pd-catalyzed direct C–H hydroxylation of 2-arylpyridines using molecular oxygen (O2) as the sole oxidant. The key aspects of the method include: (a) the activation of molecular oxygen with a nontoxic and inexpensive aldehyde; (b) an efficient association of the in situ-generated acyl peroxo radical with palladium catalysis; and (c) convenient operating conditions. On the basis of

  本文中，我们介绍了使用分子氧（O 2）作为唯一氧化剂的Pd催化2-芳基吡啶的直接C–H羟基化反应。该方法的关键方面包括：（a）用无毒且廉价的醛活化分子氧；（b）原位产生的酰基过氧自由基与钯催化的有效结合；（c）方便的操作条件。基于一系列对照实验中获得的结果，涉及Pd II / Pd IV催化循环的转化。此外，该方法可容易地以良好的分离产率获得广泛范围的取代的2-（吡啶-2-基）苯酚。
• Metallaphotoredox-Mediated C_sp2–H Hydroxylation of Arenes under Aerobic Conditions
  作者：Sk. Sheriff Shah、Amrita Paul、Manoranjan Bera、Yarra Venkatesh、N. D. Pradeep Singh

  DOI：10.1021/acs.orglett.8b01973

  日期：2018.9.21

  The direct hydroxylation of 2-arylpyridines and 2-arylbenzothiazoles via the merger of organic photoredox and metal catalysis is reported where 4CzIPN is used as the visible-light photocatalyst and Pd(OAc)2 as the metal catalyst. This method has been employed to synthesize organic molecules exhibiting excited-state intramolecular proton transfer properties for generating tunable luminescence responses

  据报道，通过有机光氧化还原和金属催化作用的结合，2-芳基吡啶和2-芳基苯并噻唑的直接羟基化反应，其中4CzIPN被用作可见光光催化剂，而Pd（OAc）2被用作金属催化剂。该方法已被用于合成表现出激发态分子内质子转移性质的有机分子，以产生可调节的发光响应。